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Finding the Fourth Proportional to 6,149.50, 8,486.34 and 3,355

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Solution

The fourth proportional to 6,149.50, 8,486.34 and 3,355 is: 4,629.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,149.50 : 8,486.34 = 3,355 : x
  2. Step 2: Convert to fraction form
    6,149.50/8,486.34 = 3,355/x
  3. Step 3: Cross multiply
    6,149.50x = 8,486.34 × 3,355
  4. Step 4: Simplify right side
    6,149.50x = 28,471,670.70
  5. Step 5: Solve for x
    x = 28,471,670.70/6,149.50
  6. Step 6: Final answer
    x = 4,629.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.